Hi Chris,

I'm with an optics vendor, Luma optics. All our optics are field programmable 
to work in any intended network environment. Regarding your question, its  
unnecessary to pad a 10km LR, even with such a short reach ( 20m) .  If it were 
an ER or ZR, it would be a different story. 
Good luck with you project. 

Regards, 

Eric Litvin
LumaOptics.net
650 996 7270

Sent from my iPhone

> On Oct 19, 2013, at 7:33 PM, Chris Costa <ccosta92...@gmail.com> wrote:
> 
> What are the opinions/views on attenuating short, 1310nm LR cross-connects.
> Assume < 20m cable length and utilizing the same vendor optics on each
> side of the link.  Considering the LR transmit spec doesn't exceed the
> receiver's high threshold value do you pad the receiver closer to the
> median RX range to avoid potential receiver burnout over time, or just
> leave it un-padded?
> 
> Thanks

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